Answer this question truthfully
### Question: What causes Atopic dermatitis?
### Response: Atopic dermatitis is due to a skin reaction (similar to an allergy) in the skin. The reaction leads to ongoing swelling and redness. People with atopic dermititis may be more sensitive because their skin lacks certain proteins.
Atopic dermatitis is most common in infants. It may start as early as age 2 to 6 months. Many people outgrow it by early adulthood.
People with atopic dermatitis often have asthma or seasonal allergies. There is often a family history of allergies such as asthma, hay fever, or eczema. People with atopic dermatitis often test positive to allergy skin tests.
The following can make atopic dermatitis symptoms worse:
Allergies to pollen, mold, dust mites, or animals Cold and dry air in the winter Colds or the flu Contact with irritants and chemicals Contact with rough materials, such as wool Dry skin Emotional stress Drying out of the skin from taking too many baths or showers and swimming too often Getting too hot or too cold, as well as sudden changes of temperature Perfumes or dyes added to skin lotions or soaps